There is no official iOS version. Loop is an open-source Android app, and its project page lists Google Play, F-Droid and a direct APK as the ways to install it — nothing else. The apps in the App Store with similar names are other people's apps.
Checked on its project page on 2 November 2026: the install instructions are Google Play, F-Droid, or downloading the APK from the releases page. iOS is not mentioned at all.
That is not an oversight anyone forgot to fix. Loop is a volunteer open-source project, and F-Droid — where a lot of its users get it — has no iOS equivalent, because iOS has no way to install from a third-party catalogue of free software and no way to sideload without a developer account. The distribution model Loop exists inside does not have an iPhone shape.
So be careful in the App Store. Searching “Loop Habit Tracker” returns apps that took the name; none of them is the project, and none of them inherits its code, its data format or its licence.
Worth naming, because “an iPhone Loop” usually means a short list of properties rather than that exact app:
RIPEN is on both iPhone and Android, and it matches most of that list — but there are two things it is not, and you should know them before installing.
Where it matches:
Where it does not:
If neither of those is a dealbreaker, a missed day in RIPEN costs 1 leaf, then 2, then 3 if it keeps going, capped at 3 a day — and the branch never gets shorter. What a missed day costs, or get the app.
Install methods and platform support were read from the Loop Habit Tracker project page (github.com/iSoron/uhabits) on 2 November 2026 and are the project’s own words. Open-source projects change; check before deciding.